Spark-arrester.



PATENTBD SEPT.`.24, 1907...

E. H. LUBBERS.

SPARK ARRBS'IEB..l PPLIGATION FILED APB.17,1907.

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\ i EMIL H.- LUEDERS, OF REEDSBURG, WISCONSIN.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented Sept. 24, 1907.

Application filed April 17,1907. Serial No. 368,677.

To all whom it may concern:

Be it known that I, EMIL H. LUEDERS, a citizen of the United States, residing at Reedsburg, in the county of Sauk, State of Wisconsin, have invented certain new and useful Improvements in Spark-Arresters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

The present invention relates to improvements in spark arresters, and it aims to provide a simple as well as inexpensive device of that class, which, when in place in the smoke stack, will effectually arrest the sparks in their upward progress, and will extinguish the same without obstructing the draft.

To this end, the invention comprises a conical screen disposed within a skeleton frame provided with a hinged cover, the screen carrying at its open top an inverted cup-shaped deflector, into which the sparks are directed and against whichy they strike.

The invention will be readily understood from the following detailed description, and its preferred embodiment is illustrated in the accompanying drawings, in which like parts are designated by corresponding reference numerals in the several views.

Of the said drawings-Figure l is a side elevation oi the present invention, the deflector being shown partly in section. Fig. 2 is a top plan view thereof with the cover in open position. Fig. 3 is a horizontal section on the line 3-3 of Fig. l.

Referring more particularly to the drawings, the spark arrester is shown as comprising a skeleton frame inserted in the smoke-stack 5 of a locomotive, and comprising an upper ring 6 and a lower ring 7, connected by a pair of vertical rods 8. Disposed within the frame is the screen member proper 9, which is fastened to the lower ring 7 of the frame, and is of approximately conical shape, the upper end of the screen being open and provided at such point with a ring 10, to which the material of which the screen is formed is connected. The lower ring is further provided with a at diametrically-arranged strap l1, which is connected at opposite ends thereto, and which serves as a support for the lower end of a vertical rod l2, which projects through the open top of the screen 9 and carries at such point an inverted cup-shaped delector 13, which is disposed directly over the screen top, the screen being strengthened at such point by braces 14. which connect tlie rings l0 and 6. The last-mentioned ring is provided with a screen cover l5 hinged thereto, as shown in Fig. 2, the said cover consisting of a ring, to which is secureda double thickness oi screening material. rFhe cover is in turn provided with a hasp 16, which fits over a staple carried by the skeleton frame, the engagement of the hasp with the staple preventing displacement of the cover when the latter is in its closed position.

It will be apparent from the foregoing that when the device is in place in a smoke-stack, the sparks carried up by the draft will pass through the open top of the frame and will strike against the under face ofthedelector 13, whence they will be forced back against the screen, through the meshes of which they will pass into the fiue or stack. Such sparks, however, as pass through i the meshes of the screen will strike against the screen cover l5, when the latter is in its closed position, and, falling back, will be again caught by the draft, being retained in the stack long enough to dieout and be broken into cinders sufliciently small to pass through the meshes of the cover.

The screen proper and cover may be formed of per forated steel plate or wire or other suitable material.

What is claimed, is-

1. The combination, with a smoke stack, of a skeleton vframe disposed vertically therewithin and consisting'of upper and lower rings and rods connecting the same, a conical screen secured to the lower ring and provided with an open top, a vertical rod disposed within said screen and projecting through the open top thereof, an inverted cup-shaped defiector secured to the upper extremity of said rod, and a screen cover hinged to the upper ring and extending over the top of said deiiector.

2. The combination, with a smoke stack, of a skeleton frame disposed vertically therewithin and consisting of upper and lower rings and rods connecting' the same, a Conical screen secured to the lower ringr and provided with an open top, a diametrically arranged strap attached at opposite ends to the lower ring, a vertical rod disposed within said screen and secured at its lower end to said strap, the upper end of said rod projecting through the open top of said screen, an inverted cup-shaped deiiector secured to the upper exteremity of said rod, braces connecting said screen top and upper ring, and a screen cover hinged to said upper ringand extending over the top of said deA Hector.

In testimony whereof, I ailx my signature, in presence of two witnesses.

EMIL H. LUEDERS.

Witnesses W. F. WINcHns'rER, OTTO KRAUsn. 

